High-field asymmetric-waveform ion mobility spectrometry (FAIMS or RF-DC ion mobility spectrometry) is an ion mobility spectrometry technique in which ions at atmospheric pressure are separated by the application of a high-voltage asymmetric waveform at radio frequency (RF) combined with a static (DC) waveform applied between two electrodes.[1][2][3] Depending on the ratio of the high-field and low-field mobility of the ion, it will migrate toward one or the other electrode. Only ions with specific mobility will pass through the device.
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^Kolakowski BM, Mester Z (September 2007). "Review of applications of high-field asymmetric waveform ion mobility spectrometry (FAIMS) and differential mobility spectrometry (DMS)". Analyst. 132 (9): 842–64. Bibcode:2007Ana...132..842K. doi:10.1039/b706039d. PMID17710259.
^Лосев, В.В.; Кумпаненко, И.В.; Рощин, А.В. (2007). "Спектроскопия подвижности ионов — перспективный метод обнаружения химически опасных веществ в многокомпонентных воздушных средах" [Ion mobility spectroscopy is a promising method for the detection of chemically hazardous substances in multicomponent air environments]. Химическая физика (in Russian). 26 (10): 33–42.